What is the struggle for existence according to C. Darwin? What forms of struggle for existence did he single out?

The struggle for existence is the totality of the diverse and complex interactions of organisms between themselves and with the environmental conditions surrounding them. Darwin identified three forms of struggle for existence: intraspecific, interspecific and the struggle with adverse environmental conditions.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.